Cyber Resilience

CVE-2024-6342

CriticalRCE

Published: 10 September 2024

Published
10 September 2024
Modified
22 January 2025
KEV Added
Patch
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0660 91.4th percentile
Risk Priority 24 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-6342 is a critical-severity OS Command Injection (CWE-78) vulnerability in Zyxel Nas326 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 8.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis

The vulnerability CVE-2024-6342 is an OS command injection issue, tracked as CWE-78, in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions through V5.21(ABAG.15)C0. The finding is marked unsupported when assigned and received a CVSS v3.1 score of 9.8.

An unauthenticated remote attacker can exploit the flaw by submitting a crafted HTTP POST request, enabling execution of arbitrary operating system commands and resulting in full control over the confidentiality, integrity, and availability of the affected NAS device.

The referenced Zyxel security advisory addresses the command injection vulnerability in these NAS products and outlines mitigation steps for the listed firmware versions. The associated EPSS score has remained flat at 0.0660 with no material increase observed after disclosure.

EU & UK References

Vulnerability details

**UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions through V5.21(ABAG.15)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted…

more

HTTP POST request.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

zyxel
nas326 firmware
5.21\(aazf.18\)c0 · ≤ 5.21\(aazf.18\)c0
zyxel
nas542 firmware
5.21\(abag.15\)c0 · ≤ 5.21\(abag.15\)c0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References